Sitecom USB to Serial on Mac OS X

The day before yesterday I have bought a Sitecom USB to Serial cable (UC-104). The common problem with such cables is that there are no drivers from the producer for Mac OS X. The good thing is that most of these cables use a Prolific chip. Prolific is offering a driver for cables based on their chip on their site.

When I connected the Sitecom cable "About this Mac" reported that it is a Prolific but the driver did not load. I figured out that it is the Vendor Id and Product Id that were not matching.

I had to edit /System/Library/Extentions/ProlificUsbSerial.kext/Info.plist and change the vendor and product Id's apropriately. (You can do that with every cable that has a prolific chip in it)

And after that I had to run kextload /System/Library/Extentions/ProlificUsbSerial.kext . And imagine what was the biggest problem I had. Yes exactly that I forgot to run kextload >_<

But now it works and through my post it is hopefully helpfull for someone that googles for this cable and mac ;)

(if it was usefull for you write a comment! I will be very happy about it ;) )